| package org.apache.xpath.objects; |
| |
| import org.apache.xml.dtm.*; |
| import org.apache.xpath.XPathContext; |
| import org.apache.xpath.NodeSetDTM; |
| import org.apache.xpath.axes.OneStepIterator; |
| |
| |
| public class XObjectFactory |
| { |
| |
| /** |
| * Create the right XObject based on the type of the object passed. This |
| * function can not make an XObject that exposes DOM Nodes, NodeLists, and |
| * NodeIterators to the XSLT stylesheet as node-sets. |
| * |
| * @param val The java object which this object will wrap. |
| * |
| * @return the right XObject based on the type of the object passed. |
| */ |
| static public XObject create(Object val) |
| { |
| |
| XObject result; |
| |
| if (val instanceof XObject) |
| { |
| result = (XObject) val; |
| } |
| else if (val instanceof String) |
| { |
| result = new XString((String) val); |
| } |
| else if (val instanceof Boolean) |
| { |
| result = new XBoolean((Boolean)val); |
| } |
| else if (val instanceof Double) |
| { |
| result = new XNumber(((Double) val)); |
| } |
| else |
| { |
| result = new XObject(val); |
| } |
| |
| return result; |
| } |
| |
| /** |
| * Create the right XObject based on the type of the object passed. |
| * This function <emph>can</emph> make an XObject that exposes DOM Nodes, NodeLists, and |
| * NodeIterators to the XSLT stylesheet as node-sets. |
| * |
| * @param val The java object which this object will wrap. |
| * @param xctxt The XPath context. |
| * |
| * @return the right XObject based on the type of the object passed. |
| */ |
| static public XObject create(Object val, XPathContext xctxt) |
| { |
| |
| XObject result; |
| |
| if (val instanceof XObject) |
| { |
| result = (XObject) val; |
| } |
| else if (val instanceof String) |
| { |
| result = new XString((String) val); |
| } |
| else if (val instanceof Boolean) |
| { |
| result = new XBoolean((Boolean)val); |
| } |
| else if (val instanceof Number) |
| { |
| result = new XNumber(((Number) val)); |
| } |
| else if (val instanceof DTM) |
| { |
| DTM dtm = (DTM)val; |
| try |
| { |
| int dtmRoot = dtm.getDocument(); |
| DTMAxisIterator iter = dtm.getAxisIterator(Axis.SELF); |
| iter.setStartNode(dtmRoot); |
| DTMIterator iterator = new OneStepIterator(iter, Axis.SELF); |
| iterator.setRoot(dtmRoot, xctxt); |
| result = new XNodeSet(iterator); |
| } |
| catch(Exception ex) |
| { |
| throw new org.apache.xml.utils.WrappedRuntimeException(ex); |
| } |
| } |
| else if (val instanceof DTMAxisIterator) |
| { |
| DTMAxisIterator iter = (DTMAxisIterator)val; |
| try |
| { |
| DTMIterator iterator = new OneStepIterator(iter, Axis.SELF); |
| iterator.setRoot(iter.getStartNode(), xctxt); |
| result = new XNodeSet(iterator); |
| } |
| catch(Exception ex) |
| { |
| throw new org.apache.xml.utils.WrappedRuntimeException(ex); |
| } |
| } |
| else if (val instanceof DTMIterator) |
| { |
| result = new XNodeSet((DTMIterator) val); |
| } |
| // This next three instanceofs are a little worrysome, since a NodeList |
| // might also implement a Node! |
| else if (val instanceof org.w3c.dom.Node) |
| { |
| result = new XNodeSetForDOM((org.w3c.dom.Node)val, xctxt); |
| } |
| // This must come after org.w3c.dom.Node, since many Node implementations |
| // also implement NodeList. |
| else if (val instanceof org.w3c.dom.NodeList) |
| { |
| result = new XNodeSetForDOM((org.w3c.dom.NodeList)val, xctxt); |
| } |
| else if (val instanceof org.w3c.dom.traversal.NodeIterator) |
| { |
| result = new XNodeSetForDOM((org.w3c.dom.traversal.NodeIterator)val, xctxt); |
| } |
| else |
| { |
| result = new XObject(val); |
| } |
| |
| return result; |
| } |
| } |